package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @Author dml
 * Date on 2022/6/8 0008
 */

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    // 根据id删除分类 删除前进行分类
    @Override
    public void remove(Long ids) {
        // 关联 菜品
        LambdaQueryWrapper<Dish> qw1 = new LambdaQueryWrapper<>();
        qw1.eq(Dish::getCategoryId, ids);
        int count1 = dishService.count(qw1);
        if (count1 > 0) {
            throw new CustomException("当前分类关联了菜品,不可删除！！");

        }

        // 关联 套餐
        LambdaQueryWrapper<Setmeal> qw2 = new LambdaQueryWrapper<>();
        qw2.eq(Setmeal::getCategoryId, ids);
        int count2 = setmealService.count(qw2);
        if (count2 > 0) {
            throw new CustomException("当前分类关联了套餐,不可删除！！");
        }
        super.removeById(ids);

    }


}
